266664440407013 has 16 divisors (see below), whose sum is σ = 291424711248000. Its totient is φ = 241990601062080.

The previous prime is 266664440407007. The next prime is 266664440407021. The reversal of 266664440407013 is 310704044466662.

It is a cyclic number.

It is not a de Polignac number, because 266664440407013 - 2⁸ = 266664440406757 is a prime.

It is a super-2 number, since 2×266664440407013² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266664440407913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57141503 + ... + 61631811.

It is an arithmetic number, because the mean of its divisors is an integer number (18214044453000).

Almost surely, 2^{266664440407013} is an apocalyptic number.

It is an amenable number.

266664440407013 is a deficient number, since it is larger than the sum of its proper divisors (24760270840987).

266664440407013 is a wasteful number, since it uses less digits than its factorization.

266664440407013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499932.

The product of its (nonzero) digits is 13934592, while the sum is 53.

The spelling of 266664440407013 in words is "two hundred sixty-six trillion, six hundred sixty-four billion, four hundred forty million, four hundred seven thousand, thirteen".